uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/tools/analysis/hotspot/default.nix

@@ -0,0 +1,80 @@
+{ lib
+, mkDerivation
+, cmake
+, elfutils
+, extra-cmake-modules
+, fetchFromGitHub
+, kconfigwidgets
+, ki18n
+, kio
+, kitemmodels
+, kitemviews
+, kwindowsystem
+, libelf
+, qtbase
+, threadweaver
+, qtx11extras
+, zstd
+, kddockwidgets
+, rustc-demangle
+}:
+
+mkDerivation rec {
+  pname = "hotspot";
+  version = "1.3.0";
+
+  src = fetchFromGitHub {
+    owner = "KDAB";
+    repo = "hotspot";
+    rev = "v${version}";
+    sha256 = "1f68bssh3p387hkavfjkqcf7qf7w5caznmjfjldicxphap4riqr5";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [
+    cmake
+    extra-cmake-modules
+  ];
+  buildInputs = [
+    elfutils
+    kconfigwidgets
+    ki18n
+    kio
+    kitemmodels
+    kitemviews
+    kwindowsystem
+    libelf
+    qtbase
+    threadweaver
+    qtx11extras
+    zstd
+    kddockwidgets
+    rustc-demangle
+  ];
+
+  # hotspot checks for the presence of third party libraries'
+  # git directory to give a nice warning when you forgot to clone
+  # submodules; but Nix clones them and removes .git (for reproducibility).
+  # So we need to fake their existence here.
+  postPatch = ''
+    mkdir -p 3rdparty/{perfparser,PrefixTickLabels}/.git
+  '';
+
+  cmakeFlags = [
+    "-DRUSTC_DEMANGLE_INCLUDE_DIR=${rustc-demangle}/include"
+    "-DRUSTC_DEMANGLE_LIBRARY=${rustc-demangle}/lib/librustc_demangle.so"
+  ];
+
+  meta = {
+    description = "A GUI for Linux perf";
+    longDescription = ''
+      hotspot is a GUI replacement for `perf report`.
+      It takes a perf.data file, parses and evaluates its contents and
+      then displays the result in a graphical way.
+    '';
+    homepage = "https://github.com/KDAB/hotspot";
+    license = with lib.licenses; [ gpl2Only gpl3Only ];
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ nh2 ];
+  };
+}